Combined lock and latch.



No. 740,826. PATBNTBD 00T. 6, 1903.l

' A. M." DOYLB.

COMBINED' LOCK AND LATCH. APPLIOATION FILED IANA. 2,1903. H0 HDEL.

v AWWA/EVS;

W/TNESSES:

ivo. mosse.

UNITED STATES atented Octobery 6, 41905.

PATENT OFFICE.

CoMBiN En LocK .AND LATCH.

SPECIFICATION forming part of Letters Patent No. 740,826, dated. October 6, 1903.

' appresa@ sied :ninety a i903 T0 a/ZZ whom, t may concern: I

Be it known that I, ADoLPHUs M.' DoYLn, a citizen of the United States, and a resident of Leoti, in the county of Wichita and State of Kansas, haveinventedanew and Improved Combined Door Lock and Latch, of which the following is a full, clear, and vexact description.

This invention relates to combi-ned door locks and latches, and particularly to a class of such devices wherein a gravity-actuated latch is employed; and the invention has for its object to provide novel'details of construction for a device of the character vindicated. which afford an extremely simple secure lock that is devoid of springs, may be locked or unlocked with a key or by manipulation, and

a right and left hand latch that is reversible readily, is adapted to operate to loc-k it entirely by its gravity, and consisting of a single piece operative bya knob-spindle rotatable in either direction, the improved lock and latch being adapted f or easy and cheap manufacture.

The invention consists in the novel construction and combination of parts, as is hereinafter described,and defined in the appended claims. p

Reference is to be hadto the accompanying drawings, forming a part of this specification,

in which similar characters of reference indicate corresponding parts in allthe figures.

Figure 1 is a side view of the lock and latch with parts in locked adjustment, one side wall of the lock-case being removed to expose the interior parts. Fig. 2 is a view essentialy the same as Fig. l, but showing the working details in unlocked adjustment. NFig. 3 is a perspective view of a novel locking-bolt employed. Fig. 4 is avfragmentary partly-sectional side view of details ofthe locking-bolt and a transverse sectional view of a key that is specially adapted to unlock the improved lock; and Fig. 5 is a plan view of the improved latch bolt, showing the duplicate latching-noses thereon.

The improvements are well adapted for the construction of a rim or surface lock and coinbined latch for room-doors or outer doors. in buildings and are represented as embodied to produce a lock of that character.

The lock and latch case 5 is of an ordinary 'sein No. 137,465, uit man.)

form, being rectangular peri pherally, having thin edge walls formed integral with one side wall 5a, the other side wall (not shown) being removable and securable upon the edge walls by the transverse screws l, 2, 3, 4, and 4, the ydimensions of the lock-case being duly proportioned to the sizeof lock desired. The screws l 2 are respectively located near the lower corners of the case 5 and the screws 3 4 near the upper edge thereof, all serving to secure the case on a door, while the bolt la may engage only the sides of the case to retain `the loose side Wall in place or may be dispensed with, if found unnecessary.

In one edge wall 5b of the case 5 two openings a b are formed, respectively, near the upper and lower edge walls of said case for the accommodation of a locking-bolt and a duplex latch-bolt, as will be hereinafter described. A

The gravity-latch comprises a single block 6, of metal or other available material having a suitable thickness and of essentially polygonal form peripherally. As shown, the latchblock 6 is formed with au obtuse angle c on the periphery that defines the angular divervgence of the two edge portions c' c2, and opposite said obtuse angle lies a nearly-straight portion ol of the periphery, that is defined in Vlength by the two similar obtuse angular formations c e, having a degree defined by the divergence of the two edge portions e e2 of the latch-block.

Between the adjacent end of the edge portion e' and the edge portion c a latch-nose 6a is integrally projected from the latch-block 6, said nose having a sloped side g and a lower surface i, ending in anoifset il', formed at the base of the latch-nose, the lower edge of the latch-block 6 being out away at the offset to ladord room for thev screw l to pass through the case 5.

Alatch-nose 6", similar to the latch-nose 6a, is projected from the latch-block 6, where the edge portions c? and c2 approach each other, and on said latch-nose 6b a sloped side gis formed, these sloped sides g g of the latchlnoses 6iL 6b having equal inclination from lthe side of the latch-block that Vloosely contacts 4.A side wall i2 is formed on the latch-nose 6"- and terminates in the odset shoulder t3, so as ICO with the integral side wall 5a of the case 5.

to provide room for the screw l in case the latch-block is reversed in position. Y

In the latch-block 6, extending between the latch-noses 6 6b, a slot 72, of suitable `form is produced, the ends thereof being respectively near said latch-noses, and at the longitudinal center of the slot 72, in its side edges an ovate notch h is formed, said notches being opposite each other.

The side wall 5 of thelock and latch-case 5 is perforated opposite the slot z, near the end thereof which approaches the latch-nose 6b, and in said perforation one end of the hub 7 of the tripping-dog 7 is loosely held, from which hub projects axially a portion of the knob-spindle 8 for the reception of an ordinary door-latch knob. (Not shown.)

The tripping-dog 7 consists of a T-shaped arm located centrally in the sloth, so that by a rotative movement of the knob-spindle 8in either direction the wings 7b of the trippingdog may be caused to have contact respectively with a side of an ovate notch h', toward which the dog may be rocked.

A strike-plate 9 of ordinary form is provided for engagement of a latch-nose 6 therewith, said plate being xed upon the case-` lnent-jamb A' of the doorway, wherein the door A is held to swing in the usual way, and, as shown in Fig. l, the latch-nose 6 by gravity of the block 6 is projected into the recess in the strike-plate, this engagement being effected by an enforced impinge of the sloped face g upon the striking edge of the plate 9 due to closure of the door against the jamb A.

A stud 4" projects from the side 5a of the case 5 adjacent. to the screw et, and, as shown, the stud has contact with the upper edge of the slot 7i in the latch-block G and affords support to the block, so that it may be readily moved by partial rotation of the knobspindle S for release of the latch-nose from the strike-plate 9, or a screw may be employed in place of the stud 4, if desired.

It will be seen that when the latch-block 6 is actuated by a turning movement of the tripping-dog 7 the pressure of one wing 7b of the dog on the inclined side of the lower ovate notch 7L in said block will cause the block to slide upward and rearward on the stud 4b until the latch-nose t5a is drawn into the case 5, and thus released from the strike-plate 9. Furthermore, the partial rotation of the tripping-dog 7 in an opposite direction, so as to impinge the uppermost wing 7b upon the upper ovate notch h at the side nearest the knobspindle 8, as indicated by dotted lines in Fig. 2, will in like manner elevate the latch-block 6 and retract the latch-nose (ia from a locked engagement with the strike-plate 9, so that the latch may be operated for release when a spindle-knob is turned in either direction.

Upon opening the door A and release of the knob on the spindle 8 the latch-block will by its gravity slide toward the edge wall 5b and project the nose 6a through the aperture b ready for a rengagement with the strikeplate 9 upon a subsequent closure of the door, and it will be seen in Fig. 2 that the downward and forward inclination of the u'pper edge of the slot h in the latch-block cond uces to such an automatic sliding movement of the block 6 on the stud 4b.

Above the latch-block 6, opposite the upper opening ct in the edge wall 5b of the case 5, a locking-bolt l0 is held to slide longitudinally. As shown, the locking-bolt is in the form of a bar having a locking-nose l0a on one end, which is parallel on the upper and lowersides, that loosely contact with corresponding edges of the opening et, and the degree of outward movement of said nose is defined by a depending rib m, formed on the lower side thereof, as is shown in Fig. l.

The upper edge of the locking-bolt l0 is straight throughout its length, and in the lower edge thereof an opening n is formed in the bolt-body, extending to a point near said upper edge, the upper defining edge of the opening n being parallel with the upper edge of the bolt-body. The side edges of the opening rt are parallel with each other and substantially at rightrangles Withthe upper edge of the same, the side edge nearest to the locking-nose l0a being alined vertically with a side of the rib m.

From the opposite side of the opening n the lower edge portion of the bolt-body l0 is sloped upwardly and rearwardly, merging into a nearly straight lower edge portion that rests on the screw 3, and it may here be explained that this screw may be supplanted by a stud or other integral projection from the side wall or walls of the case 5.

The portion of the bolt-body lO that extends rearward from the opening n is slotted longitudinally for the loose reception of a tumblerbar ll, and, as indicated in Figs. l and 2, the tu mbler-bar is pivoted at o, near the front end thereof, or adjacent to the opening fn.

At a proper distance from the edge wall 5" of the case 5 a keyhole p is formed in the case side wall 5a, and this keyhole, which may be duplicated in the removed side wall of the case, is of such width and is so relatively positioned that when the nose l0a on the locking-bolt is outwardly thrown to engage within the strike-plate 9, as shown in Fig. l, the keyhole p will lie close to the rear side wall or edgeoftheopeningn. Furthermore,thekey hole p will be disposed closely to the rib m at the opposite side edge of the opening 'n when the locking-bolt is fully retracted, as represented in Fig. 2.

The slot in the locking-bolt body l0 cuts through the rear wall or edge of the opening n above and below the transverse brace r, that unites the parallel side walls of said slot, and a tripping-iinger s, that curves downward and forward from the body of the tumblerbar ll at its forward end, projects below the IOO IIO

brace r, so as to aline its free end with thel rear edge of the. opening n, as is clearly shown in Fig. 4.

. A slot-openingvfn is formed in the upper edge wall of the lock-case 5 at a proper point, preferably behind the keyhole 10 and above. the stud or bolt 3, and in said slot a projecting detent-ear 11' is held to slide, this projection being formed or secured on the rear end of the tumbler-bar 11, as best shown in Fig. 2. The detent-ear 11a may have an ornamental form, but for practical service should have two offsets 'o /v formed on the rear edge one above and rearward of the other.

The position of the slot-openin g n' is such with regard to the oftsetsfu o" on the ear lla that when the locking-bolt nose 10a isfully retracted the lower odset or shoulder e on said ear will contact with the rear end of the slot-opening n and prevent a further recession of the locking-bolt, the tumbler-bar 11 now resting on the stud or bolt 3.

When the locking-bolt 10 is operated upon by a suitable key and slid forwardly therewith, so as to fully project the locking-nose 10a, the ear 11a will be correspondingly moved and the tumbler-bar will drop od of the screw 3, so that the latter will engage with the lower offset fu, whereby the locking-bolt will be held in projected adjustment, as clearly shown in Fig. 1.

The key 12, provided for locking and releasing the locking-bolt 10, is adapted to pass freely through the keyhole 19, and upon the key-bit 12a two nipple-like projections w are oppositely formed or secured, said projections being respectively disposed opposite the forward termination of the tumbler-bar 11 when the key is introduced from either side of the lock.

It will be seenthat upon insertion of the key 12 within the keyhole p and rocking it toward the tumbler-bar 11 the nipple to nearest the end of the tumbler-bar will be pressed into engagement therewith, which will rock said bar on its pivot o and elevatey the rear end thereof, which will raise the offset t: off of the screw 3 and release vthe locking-bolt therefrom.

After release of the ear 1l.a a continue pressure of the key-bit upon the forward end of the bolt-body will slide the bolt rearward and release its nose 10*L from the strike-plate 9.

Obviously the tumbler-bar 11 and lockingbolt 10 may be operated for unlocking the door on the inner side of the latter by manipulation of the ear 11a, and the door may also be locked by the same means.

The drawings show. the lock and latch arranged for use on a door that swings to the right; but by reversing the latch-block, so that its opposite side will have contact with the case side wall 5a, and disposing the latchnose 6h in the opening h the device will serve 'as a left-hand latch and the locking mechanism will be available in either arrangement of the latching mechanism., It will also be seen that as the dog 7 is provided with .two wings 7, that may alternately engage an appropriate ovate notch h in the latch-block, the knobspindle and means to rock it are available for manipulation in case the latch is arranged to serve as a left-hand latch in the improved lock and latch that has been described.

Having described my invention, I claim as new and desire to secure by LettersPatentl. The combination with a case having anapertured edgewall, of a polygonally-shaped latch-block, two oppositely-projected latchnoses on the latch-block, either nose being operative when arranged opposite the aperture, said latch-block having an elongated slotopening therein extended between the latch-noses and notched in one edge, a rockable knob-spindle passing into the slot-opening, and a tripping-dog secured on the spindle and having a wing which may enter the notch in the edge of said slot-opening, whereby the rocking movement of the spindle will raise the latch-block and then slide it laterally for retraction of a projected latch-nose.

2. The combination with a case having an apertured edge wall, of a polygonal-shaped latch-block having two latch-noses projected oppositely thereon, either nose being adapted to slide in the case-aperture and be projected therethrough by gravity of the block, said latch-block having an elongated slot-opening extended between the latch-noses, a projection from the side of the case having slidable engagement within the slot-opening at its upper edge, and means to slidably move the latch-block on said projection for retraction of one latch-nose that projects through the aperture in the case.

3. The combination with a case having an apertured upright edge wall, au apertured upper edge wall, and a keyhole near saidy upper edge wall, formed in a side wall of the case, of a locking-bolt adapted to slide through an opposite aperture in the upright edge wall, said bolt having an opening in its lower'edge opposite the keyhole in the case, and a longitudinal slot therein extended from the rear edge of the opening, a tumbler-bar pivoted near its forward end in the slot and having a tripping-linger thereon that is curved down and forward ending at the rear wall of the opening in the locking-bolt, said tumbler-bar having an ear on the rear end extended up through the aperture in the upper edge wall of the case, and having an odset for locking engagement with a projection on a side wall of the case.

4. The combination with a case, a lockingbolt held to slide therein and work ,through an aperture in the front edge of the case said IOC bolt having a longitudinal slot, and an openj ing in its lower edge opposite a keyhole in a side wall of the case, a tumbler-bar pivoted in the slot having an ear adapted to interlock with a projection on the case and prevent the bolt from sliding, a cui-ved depending finger name to this specietio'n in' the presentje of on the front end of the tumbler-bar, and a two subscibing Witnesses.

key hawn0f a projection on its bit that by 1 impingingoon an end of the finger loeks the ADOLPHUS M' DOYLL' 5 ear out of locking engagement With the pi'o- Witnesses:

f jeetion on the oase. CLYDE H. ALLPHINE,

In testimony whereof I have signed my OLIVER SCOTT. 

